/**
     * @param buf
     * @param off
     * @param length
     * @param direct
     * @return received bytes
     * @throws CIFSException
     * @throws IOException
     */
    int recv ( byte[] buf, int off, int length ) throws IOException;


    /**
     * @param buf
     * @param off
     * @param length
     * @param direct
     * @throws IOException
     */